package com.atguigu.gulimall.auth.controller;

import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.constant.AuthServerConstant;
import com.atguigu.common.exeception.BizCodeEnume;
import com.atguigu.common.utils.R;
import com.atguigu.common.vo.MemberRespVo;
import com.atguigu.gulimall.auth.feign.MemberFeignService;
import com.atguigu.gulimall.auth.feign.ThirdPartFeignService;
import com.atguigu.gulimall.auth.vo.UserLoginVo;
import com.atguigu.gulimall.auth.vo.UserRegistVo;
import org.apache.commons.lang.StringUtils;
import org.checkerframework.checker.units.qual.A;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.jws.WebParam;
import javax.servlet.http.HttpSession;
import javax.validation.Valid;
import java.lang.reflect.Member;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

@Controller
public class LoginController {
    @Autowired
    ThirdPartFeignService thirdPartFeignService;
    @Autowired
    StringRedisTemplate redisTemplate;
    @Autowired
    MemberFeignService memberFeignService;
    @GetMapping ("/sms/sendCode")
    public R sendcode(@RequestParam("phone") String phone){
        //TODO 1.接口防刷。


        String redisCode = redisTemplate.opsForValue().get(AuthServerConstant.SMS_CODE_CACHE_PREEFIX + phone);
        if (!StringUtils.isEmpty(redisCode)){
            long l = Long.parseLong(redisCode.split("_")[1]);
            if (System.currentTimeMillis()-1<60000){
                //60s内不能再发
                return R.error(BizCodeEnume.VAILD_SMS_CODE_EXCEPTION.getCode(), BizCodeEnume.VAILD_SMS_CODE_EXCEPTION.getMsg());
            }
        }

        //2.验证码的再次校验。redis。存key—phone,value-code
        String code = UUID.randomUUID().toString().substring(0, 5);
        String substring = code+"_"+System.currentTimeMillis();
        //redis缓存验证码，防止同一个phone在60s内再次发送验证码
        redisTemplate.opsForValue().set(AuthServerConstant.SMS_CODE_CACHE_PREEFIX+phone,substring,10, TimeUnit.MINUTES);
        thirdPartFeignService.sendCode(phone,code);
        return  R.ok();
    }
    @PostMapping("/register")
    public String regist(@Valid UserRegistVo vo, BindingResult result, Model model, RedirectAttributes redirectAttributes, HttpSession session){
        if (result.hasErrors()){
            Map<String, String> errors = result.getFieldErrors().stream().collect(Collectors.toMap(FieldError::getField, FieldError::getDefaultMessage));
//            model.addAttribute("errors",errors);
            redirectAttributes.addFlashAttribute("errors",errors);
            //校验出错，转发到注册页
            return "redirect:/reg.html";
        }
        String code = vo.getCode();
        String s = redisTemplate.opsForValue().get(AuthServerConstant.SMS_CODE_CACHE_PREEFIX + vo.getPhone());
        if(!StringUtils.isEmpty(s)){
            //验证码通过。远程注册
            if (code.equals(s.split("_")[0])){
                //删除验证码
                redisTemplate.delete(AuthServerConstant.SMS_CODE_CACHE_PREEFIX+vo.getPhone());
                //验证码校验通过，远程调用注册
                R regist = memberFeignService.regist(vo);
                if (regist.getCode()==0){
                    return "redirect:http://auth.gulimall.com/login.html";
                }else {
                    HashMap<String, String> errors = new HashMap<>();
                    errors.put("msg",regist.getData("msg",new TypeReference<String>(){}));
                    redirectAttributes.addFlashAttribute("errors",errors);
                    return "redirect:http://auth.gulimall.com/login.html";
                }
            }else {
                HashMap<String, String> errors = new HashMap<>();
                errors.put("code","验证码错误");
                redirectAttributes.addFlashAttribute("errors",errors);
                return "redirect:http://auth.gulimall.com/login.html";
            }
        }else {
            HashMap<String, String> errors = new HashMap<>();
            errors.put("code","验证码错误");
            redirectAttributes.addFlashAttribute("errors",errors);
            return "redirect:http://auth.gulimall.com/login.html";
        }
    }
    @GetMapping("/login.html")
    public String loginPage(HttpSession session){
        Object attribute = session.getAttribute(AuthServerConstant.LOGIN_USER);
        if (attribute==null){
            return "login";
        }else {
            return "redirect:http://gulimall.com";
        }

    }
    @PostMapping("/login")
    public String login(UserLoginVo vo,RedirectAttributes redirectAttributes,HttpSession session){
        //远程登录
        R login = memberFeignService.login(vo);
        if (login.getCode()==0){
            MemberRespVo data = login.getData("data", new TypeReference<MemberRespVo>() {
            });
            session.setAttribute(AuthServerConstant.LOGIN_USER,data);
            //成功
            return "redirect:http://gulimall.com";
        }else {
            HashMap<String, String> errors = new HashMap<>();
            errors.put("msg",login.getData("msg",new TypeReference<String>(){}));
            redirectAttributes.addFlashAttribute("errors",errors);
            return "redirect:http://auth.gulimall.com/login.html";
        }
    }
}
